The snap-judgment implication was that, by purchasing this small, cool company, Facebook was about to ruin it forever, prompting those “in the know” to head for the door. But the larger implication was that Facebook was so obviously uncool that one could be tainted just by association with it.

What a fascinating change. Just a few years ago, Facebook was the cool thing, the new thing, the David to Myspace’s Goliath: the one you rooted for. Students at universities in the US could not wait until their campuses were allowed to participate.

Where did it all go wrong? Was it all the times Facebook got in trouble for changing its users’ privacy settings? Or was it FarmVille?

We may never know, but to me, it’s clear: the thrill is gone. Oh, the site will be with us for a long time yet to come. But if cynicism about Facebook’s motives runs this deep, the company has more of a public perception problem than it may realize.